"Satoshi "Zipang" Katsura" (sundowne36)
09/13/2016 at 05:24 • Filed to: None
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"Satoshi "Zipang" Katsura" (sundowne36)
09/13/2016 at 05:24 • Filed to: None | 0
| 9 |
So I’m sort of sitting here, debating on what I should go for with Project Dragonsong V2 (a build I had recently completed and sold), whether I should keep it small or go big in the pursuit of cooling efficiency and maximum performance possible, and I’ve touched on the idea of getting a Corsair 900D (hoping that their quality has improved over the last 3 years.)
The only problem was figuring out how this system would perform in terms of cooling, as obviously, I’m cooling this one by water. Despite that, air would have to play a crucial role still (motherboard, RAM, what else did I miss?) and I’m wondering if I should go for a positive air pressure (more intake fans than exhaust, keeping dust out but a possible issue of stagnant air spots = components heating up over time if fresh air isn’t a thing) or Negative Air Pressure (opposite - more exhaust fans than intake, dust gets in and components obviously heat up).
What a strange, yet interesting issue.
VonBootWilly - Likes Toyota, but it's still complicated.
> Satoshi "Zipang" Katsura
09/13/2016 at 05:56 |
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From my experience with building pc’s (out of necessity, not for pleasure). I found big cases are great for doing work (if that’s going to happen once in a while) and small pc’s are only good if you need to save space for real, and aren’t really going to touch it. Airflow in PC cases is sort of common sense, it’s never going to be perfectly noticable unless it’s right to the point.
I found with trial an error that if I could exhaust the main heat as directly as possible, airflow was less important. I have an air/fan/sink on my cpu that aims directly up and out the top open vent with no extra top fans, and it works great. For GPU’s, I look at the air requirements of the GPU (inlet and outlet) and make sure at least a stream the same size as the basic cfm it’s asking for is there for either side, which usually just ends up being a side fan in and often a front exhaust. Always wanted to have a GPU cooler with actual exhaust ducts.
Rustholes-Are-Weight-Reduction
> Satoshi "Zipang" Katsura
09/13/2016 at 06:22 |
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Aren’t there any air filter solutions for PC cases? Shouldn’t be to difficult to build.
spanfucker retire bitch
> Satoshi "Zipang" Katsura
09/13/2016 at 07:05 |
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I’ve always gone with positive air pressure. That combined with fan filters do wonders to keep the dust out.
Tareim - V8 powered
> Satoshi "Zipang" Katsura
09/13/2016 at 08:02 |
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I thought negative air pressure was good for keeping dust out?
that makes more sense to me as it pulls air out (and hopefully dust) having more intake means more dust in surely?
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spanfucker retire bitch
> Tareim - V8 powered
09/13/2016 at 08:13 |
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Nope. Because cases (even if you exclude the fans) aren’t air tight, there’s all kinds of crevices that dust can sneak into. Double goes for any intake/exhaust vents that might be on the top of case.
If you have positive pressure it basically acts the opposite of a bio-containment facility. Those ones are kept at negative pressure so any doors for example that are opened suck air in and prevent anything from escaping.
Think the opposite for a positive pressure case - it forces air out through every nook and cranny available and keeps the dust from getting in.
BorkBorkBjork
> Satoshi "Zipang" Katsura
09/13/2016 at 10:04 |
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I have a difficult time believing that you are going to have a significant pressure differential between the two setups. Even if you do, I am not sure how a lower internal pressure will reduce the amount of particulate deposition on your internal components. That would have more to do with the amount of air that is being transited through your PC than the pressure inside.
random001
> spanfucker retire bitch
09/13/2016 at 11:00 |
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This doesn’t matter in a computer case. More intake than exhaust might keep dust out of coming through the cracks in the case, but you have so many fans that they will draw all the dust in. Unless you filter them, which typically drops the airflow by a huge amount, 30-60% on one that is effective against dust. Just put the computer high, not on the floor, and clean it occasionally, you’ll be fine. If you are seriously worried, or want to get serious, it’s time to start 3D printing air ducts int he case for each component you want cooled.
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Satoshi "Zipang" Katsura
> Rustholes-Are-Weight-Reduction
09/13/2016 at 13:54 |
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This one comes with more than 3, if memory serves me right. Two on the lower side fans, one on the front and one on the top.
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Satoshi "Zipang" Katsura
> random001
09/14/2016 at 15:47 |
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I have considered utilizing the many filters that the 900D came with, but the problem is having to install at least 2-4 radiators (1 x 360mm, 2 x 480mm, 1 x 120 mm) and having clearance issues with the included magnetic fan filters. I’ll probably ring up Corsair, Koolance (thank God they’re local) and EKWB about it, too.